Cotton-drawing frame with balling head



July 23, 1929. A E, KOCH 1,721,783

COTTON DRAWING FRAME WITH BALLING HEAD Filed June 28, 1928 lill Cil

Patented July 23, 1929.

@athis-ET ithiil.,

ERNST KOCH, OF DRESDEN, GERMANY, ASSIGNGR TO SCHSSCI-IE MASCHINENFABR-IKVOR-Mi. RICH. HARTMANN, AKTENGESELLSCHAFT, 0F CHEMNITZ AND DRESDEN,

GERMANY.

COTTON-DRAWING FRAME WITH BALLING HEAD.

Application filed June 2S, 1928, Serial No. 288,975, and in Germany July6, 1927.

Commonly in preparing cotton for spinning the sliver produced by thecotton drawing frame is delivered into cans (coilers). lVhen passing theslivers on to the succeeding process for further treatment thisfeeding-on performance by means of cans is less convenient and would beapparently more facilitated when the slivers are in the form of bobbins.

In the succeeding operations of the French system of worsted drawing theattenuated and loosened slivers issuing from the drawing rollers arerestrengthened by imparting to the same a false twist by means ofrevolving funnel twister heads or rub aprons having both a rotary andreciprocating lateral movement;

and after having been subjected to this process the slivers are madeinto bobbins of suitable form for further preparation and to obtainbetter facilities for creeling them on the succeeding machines.

There are, however, also some special machines in the worsted drawingdepartment7 for which the feeding from cans is still in use, but bobbinsare more and more succeeding in replacing the same.

It is to be foreseen that the substitution of the can delivery by meansof the delivery in bobbin formation will also meet the requirements ofthe progressing development of the cotton spinning process with a viewto simplifying the working operations and securing better results instrengthening the slivers of cotton drawing frames by appropriate meansof conipacting and condensing.

This foreseeing contemplation is principally based on the increasingapplication and evolution of high drafting mechanism in cotton spinning,and conscientious studies on this basic principle resulted in thediscovery of an important improvement of the cotton drawing frame ofwhich a description will be given below.

According to the invention it is proposed to provide this machinefirstly, at least, the last passage of the drawing frame at the outletwith rub apron condensers in connection with a succeeding balling headfor winding the slivers on bobbins.

The combination of sliver condensing and compacting means which forinstance may take the form of rub aprons with a balling head for makingthe strengthened slivers into bobbins after they are delivered from thedrawing mechanism of the cotton drawing frame, as v'ell as thesubstitution of the cans by bobbins are entirely novel features in theprocess of cotton spinning, which present ample scope for itsadvantageous and successful simplification, as has been alreadyconfirmed by practical experiments and tests.

This new method of strengthening the cotton slivers after the drawingoperation by imparting to them a false twist is in contradistinction tothe hitherto used process of the so-called three roller system of cottonspinninga in which the strengthening of the slivers or rovings isexclusively obtained by proper twisting through flyer frames. Thepresent improvement, therefore, is particularly intended to provide fora future and entire suppression of the cotton fly frames.

The said improvement may be more fully understood and appreciated fromthe accompanying drawing, which diagrammatically illustrates, by way ofexample, the attachment of a lap making arrangement or balling head indirect succession to thel drawing device of a cotton drawing frame; thedesign of this balling head being similar in itself to such as isalready known from the porcupine drawing boxes of the worsted spinningprocess.

As will be seen from this illustration the sliver is lifted out from thecan a of the proceeding drawing process over the sliver guide bar Y) andpassed through the pair of feed rollers c and cl. Then issuing from thelatter it is slightly supported by a sliver guide e on its further wayto a roller drafting device consisting forinstance of 4 pairs of drawingrollers f, g, h, t', wherefrom the slivers are delivered in the form ofa broad thin fleece. This fleecey after leavingy the front pair ofdrawing rollers z' is compacted into a narrow ribbon by means of a wedgeshaped conductor 7c and presented in this condition to a condensingdevice constituted by a unit of two endless upper and lower rub aprons aand 'm having a continuous longitudinal and a reciprocating lateralmotion by which the sliver, when passing between the same, is roundedand condensed. The thus strengthened sliver is then passed through afunnel `guide 0 onto a lap winding apparatus or balling head with theballing roller p to which besides its rotary movement a continuoustraverse motion is imparted for the purpose of producing a cross woundbobbin g ,suitable for being placed in the creel of the next process.

Having now particularly described and ascertained the nature of thepresent invention and in what manner the saine is carried into effect, Ideclare that what I claim is l. A cotton drawing fraine comprising aseries of drawing rollers, a rnb apron device for condensing the sliverand arranged to operate on the sliver after the drawing rollers, and aballing head having an axial trav erse motion vfor winding the sliverinto cross wound bobbins.

2. A cotton drawing` frame comprising a series of drawing rollers, a rubapron device arranged to operate on the sliver after the drawingrollers, a hailing head having an axial traverse motion, and a funnelguide arranged between the said rub apron and the Said balling head.

In testimony whereof I have signed my name to this specitication.

ERNST KOCH.

